"Watching the news unfold at Ohio State University," he wrote of
the Columbus attack. "Our thoughts and prayers are with all of
the students and administration."

Trump praised the university's emergency-management team for
doing an "excellent job" notifying students and faculty via
social media "immediately."

"THANK YOU to all FIRST RESPONDERS who reacted immediately and
eliminated the threat on campus," he continued.

Earlier Monday, a man plowed his car into a
crowd, then jumped out and started stabbing people with a butcher
knife, officials said. The assailant was shot dead by police
shortly after he began stabbing people in the crowd, officials
said.

Monica Moll, Ohio State University's director of public safety,
identified the suspected assailant as Abdul Artan, a student at
the university and Somali refugee.

Nine people were taken to hospitals afterward with injuries, one
of whom was in critical condition.